Saw an ad for what I think is a 1991 MB-1, comparing the seat tube decal to what is in the 1991 catalog (http://sheldonbrown.com/bridgestone/...ne-1991-11.htm). The top tube and downtube designs don't look exactly the same though--doesn't have that tapered diagonal of gray.
Anyway, the bike looks like it has seen better days:
Seller is asking $120. Seems like a decent price for here in Southern California. I'm a bit wary based on the condition. I'd appreciate any thoughts!